Disappearing window.



Patented Oct. 22, 1918.

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Inventor: war/d 6. Bals,

DISAPPEARING WINDOW.

Specification of Letters Patent.

Patented Oct. 22, 1918.

Application filed. January 5, 1917. Serial No. 140,767.

To all whom it may concern:

Be it known that I, EDWARD C. BEALS, a citizen of the United States, residing at San Mateo, in the county San Mateo and State of California, have invented certaln new and useful Improvements in Disappearing Windows, of which the following is a specification.

This invention relates to disappearing windows of the general type in which the sash is adapted to be lowered into a pocket. One of the objects of my invention 1s to provide a movable stool which normally covers the top of the pocket and forms a part of the sill construction to support the sash when in raised position and which may be readily shifted from the inside of the room when it is desired to lower the window into the pocket.

In the accompanying drawings, Figure 1 is a vertical section of a window construction embodying my invention; Fig. 2 1s a plan view of the link guides for the movable stool; Figs. 3 and 4 are deta1l v ews of parts of said guides; Fig. 5 is a VQI'tlCfihSGC- tion of a modified form of my invention; Fig. 6 is a cross-section through one side of the window frame and sash but show ng my separable sash; Fig. 7 is a plan vlew of one of the lateral guide plates for the movable stool; and Fig. 8 shows detail views of the guide pins carried by the movable stool.

The window frame may be of the usual construction and is provided with an outer sill 1, having an upstanding flange 3 .atuts inner side to cooperate with the dependmg flange 5 at the front edge of the movable stool 6, to form a weather-tight omt.

The stool 6 is preferably formed with a raised portion 6*, providing a ledge 6 extending along the inner edge of the baseof the sash 8 and forming a weathertight'jo1nt therewith. The front of the stool is provided with raised portions or projections 7, adapted to engage the outer side of the sash, forming a stop to prevent outward movement and cooperating with the ledge 6 to position and securely hold the sash. The top of the sash is held between the front and rear stops 18 and 19, the headamb 20 being recessed at 21 to permit the sash to be raised when it is desired to slide the stool 6.

In order that the stool 6 may automatically move upwardly and ride over the ledge 5 and the forward edge of the inner sill 10, as the operator pulls inwardly upon the knob or knobs 12, I provide toggle links 15 at each end of the stool to serve as guides during the movement from the full line position to the dotted line position shown in Fig. 1. The end plates 16 16, to which the links are pivotally connected are secured respectively to the bottom of the stool and to a window frame member 17. I preferably bevel the forward edge of the sill 10 and correspondingly incline or bevel the inner edge of the stool 6 as shown, these inclined edges serving as rear guides which coiiperate with the toggle links in lifting the stool as it is drawn rearwardly.

In the modification shown in Fig. 5, in lieu of the toggle links previously described, I provide guide plates 25, at either side of the window frame which are provided with angular slots 26, to receive the guide-lugs 27, carried by angle-plates 28 fastened to each side of the stool 6. When the stool 6 is lifted and moved rearwardly by the knob 12, the lugs 27 sliding in the slots 26 cause the front portion of the stool to move over the ledge 3, and to ride over the top of the sill 10.

The sash may be balanced in the usual manner by means of a sash cord 30 secured to the sash and passing over pulleys 31 secured in the pulley stile 32 adjacent the top of the window frame, and secured to weights 34, as I have illustrated in Fig. 6.

To facilitate the washing of the windows in the upper stories, I make the sash in two parts 2, 2", which are fastened together by means of two-part bolts. The outer bolt part 35 is tubular with internal threads and preferably squared on its outer side so that it may be driven tightly into a hole in the sash and will remain without turning. The inner solid bolt member 36 is exteriorly threaded to engage the interior threads of the member 35. By removing the bolt members 35, the inner sash 2 carrying the glass, may be removed from the sash part 2.

When it is desired to lower the sash into pocket 40, the sash is lifted slightly into the recess 21 in the head jamb, the stool 6 is then slid back into dotted line position by means of the knob 12, and after the sash has been dropped into the pocket 40, the stool is moved back into normal position over the pocket. By reason of the action of the toggle links 15 or the guide plates 25, cooperating with the beveled edges of the stool and sill, the stool 6 ismaintained in a substantially horizontal position during its entire movement and inasmuch as the sash must be lifted only enough to per-.7.

mit the stool to clear the ledge 3, a slight elevation of the window sash is sufficient.

I have described in detail the construction illustrated in the accompanying drawings for the purpose of disclosing embodiments of my invention, but it is evident that various modifications may be made within the scope of my claims and without departing from the spirit of my invention.

I claim v 1. A disappearing window construction, comprising a window. frame including an upper window opening and a window receiving pocket below, a horizontally movable stool mounted in the frame and normally covering the pocket and supporting the sash when in the window opening, and guiding means operating to raise the entire stool as it is .moved rearwardly from its position over the pocket.

2. A disappearing window construction, comprising a window frame including an upper window opening and a window receiving pocket below, a horizontally movable stool mounted in the frame and normally covering the pocket and supporting Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

the sash when in the window opening, and guiding means connecting the frame and the stool and which lifts the stool obliquely up- -ward and then rearward when the stool is moved rearward from its position over the pocket- 3. In a disappearin' window provided with a pocket below t e window opening, a movable stool adapted to support the sash in raisedlposition" and to cover the window pocket, and pivotal means connecting the stool and the window frame adapted to lift the stool obliquelynpward and permit it to move horizontally as it is drawn rearg ward.

ll. A disappearing window construction,

comprising a window frame including. an

upper window opening, a Window receiving pocket below, and a sill having a raised tend over said raised sill portion, andmeans 0 over and above adapted to lift theflsto said raised sill portion when the stool is moved rearwardly and to lower the stoolthereover as it is moved forwardly.-

In testimony whereof I aflix my signature.

EDWARD C. BEALS.

Washington, D. 0. 

